Created the links.ts router & created a route to insert a new link

api/routes/links.ts

@@ -0,0 +1,21 @@
+import Router, {Response} from 'express';
+import {AuthenticatedRequest, hasRank} from "../middlewares/authenticate";
+import {Rank} from "../../models/User";
+import {validateSchema} from "../../util/validate";
+import {shortUrl} from "../validations/linkValidation";
+import {ShortenedLink} from "../../models/ShortenedLink";
+
+const app = Router();
+
+app.put("/", hasRank(Rank.TEAM_MEMBER), async (req: AuthenticatedRequest, res: Response) => {
+    const validationError = validateSchema(shortUrl, req.body);
+    if (validationError) return res.status(400).json({message: validationError});
+
+    if (await ShortenedLink.findOne({shortenedId: req.body.shortenedId}) != null)
+        return res.status(409).json({message: "The provided id has already been taken"});
+
+    const link = await ShortenedLink.create({originalUrl: req.body.originalUrl, shortenedId: req.body.shortenedId, clientId: req.user.clientId});
+    res.json({message: "Link successfully shortened", "shorten_url": link.shortenedId});
+});
+
+module.exports = app;